On Fri, Feb 10, 2012 at 15:49, Dmitry Karpeev <karpeev at mcs.anl.gov> wrote:
> Yes, DMGetMatrix responds the same way wherever you call it from, but > what will happen if you call DMSetMatrixPreallocateOnly() and use that DM > with a KSP? > It seems to me that once DMSetMatrixPreallocateOnly() has been called, > that DM is only usable from SNES. > Huh? DMGetMatrix() never puts useful values in the matrix, it's just the difference between specifying the number of nonzeros per row and placing those nonzeros where they belong. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-dev/attachments/20120210/80bb8d62/attachment.html>
